The mean salary at Ivy's store is $850 per week with a standard deviation of $120. Ivy earns $1,000 per week. Calculate the z-score of her salary.

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Empty box + box + empty box fill in the box is equal to 30 how

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?